Home > Geometry Code > E Core

Ferrite E cores are one of the most widely recognized shapes, as they are based upon traditional laminated E cores. E cores are fairly inexpensive, and are easy to wind and assemble, with standard bobbins and mounting hardware. Typical applications for E cores include differentia, power and telecom inductors as well as broadband, power, converter and inverter transformers.

One disadvantage of cores is they do not offer self shielding

Dimensions of E Cores with Rectangular Cross Section
(based upon Table 2 of IMA Standard Specifications for E, U and I Cores)


SIZE TOL D1 D2 D3 H1 H2 w R1 R2
mm in mm in mm in mm in mm in mm in mm in mm in
E13/4 MIN 12 0.48 8.9 0.35 3.4 0.13 6.3 0.25 4.5 0.177 3.4 0.13 - - - -
MAX 13 0.52 9.5 0.37 3.7 0.15 6.5 0.26 4.8 0.189 3.7 0.15 1 .039 0.3 0.01
Sort By:
Page of 2
E30/13/11 CORE SET E30/13/11 CORE SET

Product price is not filled in. This product cannot be purchased.

E19/8/5 CORE E19/8/5 CORE

Our Price: $0.12
E25/10/6 CORE E25/10/6 CORE

Our Price: $0.14
E25/10/6 CORE E25/10/6 CORE

Our Price: $0.22
E25/10/6 CORE E25/10/6 CORE

Our Price: $0.26
E22/6/16 PLANAR CORE E22/6/16 PLANAR CORE

Our Price: $0.29
E25/16/6 CORE E25/16/6 CORE

Our Price: $0.29
E6/3/2 CORE E6/3/2 CORE

Our Price: $0.31
E25/10/7 CORE E25/10/7 CORE

Our Price: $0.32
E30/15/7 CORE E30/15/7 CORE

Our Price: $0.39
E30/15/7 CORE E30/15/7 CORE

Our Price: $0.44
E34/14/9 CORE E34/14/9 CORE

Our Price: $0.48
E19/8/5 CORE E19/8/5 CORE

Our Price: $0.50
E41/17/12 CORE E41/17/12 CORE

Our Price: $0.56
E32/6/20 PLANAR CORE E32/6/20 PLANAR CORE

Our Price: $0.59
E36/6/18 PLANAR CORE E36/6/18 PLANAR CORE

Our Price: $0.67
E41/17/12 CORE E41/17/12 CORE

Our Price: $0.76
E42/21/15 CORE E42/21/15 CORE

Our Price: $0.76
E42/21/15 CORE E42/21/15 CORE

Our Price: $0.81
E25/10/6 CORE E25/10/6 CORE

Our Price: $0.88
E38/8/25 PLANAR CORE E38/8/25 PLANAR CORE

Our Price: $0.92
E42/21/20 CORE E42/21/20 CORE

Our Price: $0.94
E36/18/11 CORE E36/18/11 CORE

Our Price: $1.03
E47/20/16 CORE E47/20/16 CORE

Our Price: $1.12
E32/6/20 PLANAR CORE E32/6/20 PLANAR CORE

Our Price: $1.14
E42/21/15 CORE E42/21/15 CORE

Our Price: $1.15
E43/10/28 PLANAR CORE E43/10/28 PLANAR CORE

Our Price: $1.24